MRI scans were all performed by the same investigator (DF) according to the same techniques. MRI evaluations were made with a 1.5 tesla machine (General Electric®) following Flair, T2*, Fiesta, and 3D-SPGR T1 sequences. Tensor diffusion imaging was also part of the MRI assessment.
1.5 tesla machine
Manufactured by GE Healthcare
The 1.5 tesla machine is a magnetic resonance imaging (MRI) system produced by GE Healthcare. It generates a 1.5 tesla static magnetic field, which is used to acquire detailed images of the body's internal structures for medical diagnostic purposes. The core function of the 1.5 tesla machine is to provide a reliable and consistent imaging platform for healthcare professionals.
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Lab products found in correlation
2 protocols using 1.5 tesla machine
1
Standardized MRI Evaluation Techniques
2
Validation of Orthognathic Surgery Outcomes
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All the patients underwent standard presurgical evaluation by means of planar x-rays and CBCT scans (which is the standard for orthognathic patients). All CBCT scans were obtained from the same machine NewTom 3000 VGI Evo (Cefla Group, Imola, Italy) with the patient in natural head position and standing. Patient occlusion was ensured by asking them to bite a centric occlusion wax cast. After postoperative discharge, all the patients underwent postoperative CBCT scan (using the same machine as the preoperative scan). Only five postoperative CBCT scans were suitable for validation (i.e. six months after surgery, when the postoperative edema was resolved).
In addition, each patient received a preoperative MRI with the same protocol (3D DWI sequence on GE 1.5 Tesla machine), with the patient supine in the gantry. and1B). Minor adjustments to the 3D volumes (localized smoothing, local void filling) were performed to ensure a good quality 3D mesh models could be produced (Fig 1C and1D) and to remove unnecessary details which would impact the mesh size without affecting the simulation results. Each mesh was created using the same set of discretization parameters and it was imported in ANSYS Workbench 2020 (Canonsburg, PA, USA).
In addition, each patient received a preoperative MRI with the same protocol (3D DWI sequence on GE 1.5 Tesla machine), with the patient supine in the gantry. and1B). Minor adjustments to the 3D volumes (localized smoothing, local void filling) were performed to ensure a good quality 3D mesh models could be produced (Fig 1C and1D) and to remove unnecessary details which would impact the mesh size without affecting the simulation results. Each mesh was created using the same set of discretization parameters and it was imported in ANSYS Workbench 2020 (Canonsburg, PA, USA).
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